Refactor WebRTC certificate generation to use WebPassOwnPtr.

third_party/WebKit/Source/modules/mediastream/RTCCertificate.h

 /*
  * Copyright (C) 2015 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 16 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef RTCCertificate_h
 #define RTCCertificate_h
 
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "core/dom/DOMTimeStamp.h"
 #include "platform/heap/GarbageCollected.h"
+#include "public/platform/WebPassOwnPtr.h"
 #include "public/platform/WebRTCCertificate.h"
 #include "wtf/OwnPtr.h"
 
 namespace blink {
 
 class RTCCertificate final : public GarbageCollectedFinalized<RTCCertificate>, public ScriptWrappable {
     DEFINE_WRAPPERTYPEINFO();
 public:
     // Takes ownership of the certificate.
-    RTCCertificate(WebRTCCertificate*);
+    RTCCertificate(WebPassOwnPtr<WebRTCCertificate>);
 
-    // Returns a new WebRTCCertificate shallow copy that the caller is
-    // responsible for deleting.
-    WebRTCCertificate* certificateShallowCopy() const;
+    // Returns a new WebRTCCertificate shallow copy.
+    WebPassOwnPtr<WebRTCCertificate> certificateShallowCopy() const;
 
     DEFINE_INLINE_TRACE() {}
 
     // Returns the expiration time in ms relative to epoch, 1970-01-01T00:00:00Z.
     DOMTimeStamp expires() const;
 
 private:
     OwnPtr<WebRTCCertificate> m_certificate;
 };
 
 } // namespace blink
 
 #endif // RTCCertificate_h